Throttle-control mechanism



J. S. PAYNE I THROTTLE CONTROL MECHANISM April 19, 1927. 1,625,563

Filed Sept 17. 1926 Patented Apr. 19, 1927.

UNITED STATES JOHN S. PAYNE, OF MIDLAND PARK, NEW JERSEY.

THROTTLE-CONTROL MECHANISM.

Application filed September 17, 1926. Serial No. 136,048.

My invention relates to means for controlling the operation of throttlevalves, and its object is to provide a mechanism of such character,which will be of simple construction, and which will enable the operatorto conveniently operate the throttle from either side of the cab of ara1l road vehicle in which it is installed.

In the operation of railroad snow plows, the presence of the operator isrequired, sometimes, on one side of the cab of the plow, and sometimeson the other, and it is particularly important that he should haveconvenient control of the throttle valve at all times. Accordingly, myinvention is directed to the provision of means enabling the operator toconveniently control the throttle valve from either side of the cab.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawing: Figure 1 is a side View, in elevation, ofmy improved throttle control mechanism; Fig. 2, a top or plan view ofthe construction shown in Fig. 1; and, Fig. 3, a diagrammatlc transversesection, through the cab of a railroad vehicle, showing my inventionapplied therein.

In the practice of my invention referring descriptively to the specificembodiment thereof whch is herein exemplified, I pI'o.

vide two brackets, 10, 10, each one of which is bolted to one of thevertical cab braces, 11, 11, disposed one on each side of the cab, 11*.The brackets, 10,, 10, are similarly formed, and each is provided withtwo arms, 12 and 13. The arm, 12, carries, on its outer end, a boss, 14in WhlCh is journalled the shaft, 15. The arm, 13, is arcuate in shape,and is provided with an arcuate slot, 16, which receives the shank of athumb screw, 17, for locking the hand lever, 18, for operating thethrottle.

For controlling the throttle, two hand levers, 18 and 19, respectively,are provided, one on each side of the cab, and closely adjacent to theinside face of a bracket, 10. The lever, 18, carries, at one end, aboss, 20, through which passes the shaft. 15. A pin, 21, passes throughthe boss and shaft, securing the lever rigidly to the shaft.

The lever, 19, is formed preferably integral with a sleeve, 19*, whichsurrounds the shaft, 15, and is free to turn thereon.

To one end of the sleeve, the handle arm, 19, is joined,and to the otherend, is joined the short arm, 19 The sleeve is held against longitudinalmovement on the shaft between the inside face of the bracket, 10, and acollar, 22, rigidly secured to the shaft by a pin. A link, 23, ispivotally connected at one end, by a knuckle, 26, and pin, 27, to oneend of the floating lever, 28. The other end of the link is pivotallyconnected, by a knuckle, 29, and pin, 30, to the end of the short arm,19, of the hand-lever, 19. By referring to the drawing, it will beapparent that when the hand lever is moved, motion will be imparted tothe floating lever.

A link, 31, is pivotally connected, at one end, by a knuckle, 32, andpin, 33, to the other end of the floating lever. The opposite end of thelink is pivotally connected, by a knuckle, 3 1, and pin', 35, to one endof the short arm, 36. The other end of the arm, 36, is formed with aboss, through which passes the shaft, 15. A pin, 37, passing through theboss and shaft, locks the arm rigidly to the shaft.

A reach rod, 38, is pivotally connected a one end, by the knuckle, 39,and pin, 40, to the middle of the floating lever, 28. The opposite endof the reach rod is connected to the usual valve operating lever, 41,which is connected to a throttle valve, (not shown), in the steam dome,42.

The operation of the control mechanism is as follows: Assuming that theoperator is on the lever, 18, side of the cab,-and that the lever, 19,is locked against movement by the set screw, 17 movement of the lever,18, will turn the shaft, 15, moving the arm, 36, which, in turn, willmove the link, 31, imparting movement to the connected end of thefloating lever. As the other end of the floating lever is locked againstmovement, by the locking of the lever, 19, movement of the end connectedto the link, 23, will impart the proper movement to the reach rod, tooperatethe throttle lever in the steam dome. When the operator is on thelever, 19, side of the cab, the lever. 18. is locked, locking the end ofthe floating lever connected to the link, 23, against movement. Vith theparts in this condition, movement of the lever, 19, will impart movementto the end of the floating lever con nected to the link, 23, which, inturn, will impart the proper movement to the reach rod to operate thethrottle lever in the steam dome.

From the foregoing description, it will be apparent that I have provideda throttle control mechanism. having a mininnun number of parts. andwhich an be conveniently and ellieiently operated by the operator jl romeither side of the cab.

I claim as my invention and desire to secure by Letters Patent:

.l. In a throttle control mechanism tor railroad vehicles, thecombination of a throttle operating lever; a reach rod, connectedthereto; a floating lever, connected intermediate its ends, to the reachrod; a shaft; means for rotatahly supporting said shaft; a hand lever.rig-idly secured to the shaft; an arm. rigidly secured to the shaft; alink, connecting the arm and floating lever; a hand lever. rotatahl vmounted on the shatt, and comprising a hand arm and a link arm; and alink, connecting the link arm and the floating lever.

52, In a throttle control mechanism for railroad vehicles, thecombination of a thrott-lc operating lever; a reach rod, connectedthereto; a floating lever. connected, intermediate its ends. to thereach rod; a shaft; means for rotatably supporting said shaft; a handlever. rigidly secured to the shaft; an arm, rigidly secured to theshaft; :1 link. for connecting the arm and floating lever: a sleeve,rotatably mounted on the shaft; a hand arm, rigidly secured to thesleeve; a

link arm, rigidly secured to the sleeve; and a link, connecting; thelink arm and floating lever.

il. in a throttle control. mechanism for railroad vehicles thecon'ibination of a throttle operating lever; a reach rod, connectedthereto; a floating lever, connected, intermediate its ends, to thereach rod; a shaft; means for rotatablv supporting said shaft; a handlever. rigidly secured to the sha'lit; means tor locking the hand leverin adjusted positions; an arm, rigidly secured to the shaft; a link.connecting; the arm and floatinn lever; a hand lever, rotatably mountedon the shalt. and comprising a hand arm and a link arm; a link,connecting the link arm and floating lever; and means for locle ing: thehand arm in :uljnsted positions.

4. In a railroad vehicle. the combination ot a cab; a throttle operatinglever; a reach rod, connected thereto: a floating, lever, connected.intermediate its ends, to the reach rod; a shaft, disposed within, andextending transversely in, the cab; means tor rotatably supporting saidshaft; a hand lever, rigidly secured to one end of the shaft; an arm,rigidly secured to the other end of the shaft; a link. connecting thearm and float in o lever; a hand lever, rotatably mounted on the shaft.adjacent the other end thereof, and comprising. a hand. arm and a linkarm; and a link. connecting the link arm and floating); lever.

JOHN S. PAYNE.

